Turbulent dynamos driven by convection
- 1 August 1989
- journal article
- research article
- Published by Cambridge University Press (CUP) in Journal of Fluid Mechanics
- Vol. 205 (-1) , 297-318
- https://doi.org/10.1017/s0022112089002041
Abstract
The generation of magnetic fields by the turbulent motions of a conducting fluid driven by thermal convection in the incompressible case is studied by direct numerical simulations at Rayleigh numbers up to 200 times critical and Prandtl numbers 0.2 and 1. Our results are consistent with a dynamo effect which occurs for magnetic Reynolds numbers above a few tens, in the presence of, as well as in the absence of, rotation around the vertical axis. In all cases, the magnetic field is more intermittent than the velocity field.This publication has 34 references indexed in Scilit:
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